When is 250x250 the better choice over 300x250?

When the slot offers less than 300 pixels of width, typical of tight sidebars and multi-column footers. Everywhere else the medium rectangle has more reach and should come first.

Can I reuse a social square here?

The ratio matches, the type size does not. A 1080x1080 post scaled down to 250 pixels is unreadable. Keep the image, but set the headline and button again at display scale.

Which file format and file size?

myfeedr delivers 250×250 as PNG (lossless) and JPG. For trafficking, the JPG is what counts: around 45 KB is a realistic target for this size – small enough for any network without visible quality loss.

What does the format cost?

Formats are not sold individually — :size is part of the "Display" package from 199 €. Analysing your website is free.

250×250 banner (Square) – size and tips

Where is the 250×250 format used?

The square fits narrow sidebars, widget areas and footer columns where neither a skyscraper nor a medium rectangle will go. On blogs it often appears under the author box or in the blogroll.

Example banner in 250×250, generated automatically with myfeedr — Real example in 250×250 – generated automatically from a website (preview may be scaled).

How much copy fits into 250×250?

Headline (recommended)	35 characters
Subline useful	—
Product image useful	✓
Target file size	≤ 45 KB (JPG)

Square means choosing: a strong image or a block of copy. Both at once gets cramped.

Related sizes

→Far more inventory at almost the same height: 300×250
→The smaller square for very narrow columns: 200×200
→The larger square used by Google Ads and email templates: 300×300

Design tips for 250×250

✓Advertiser first: the logo or wordmark must be recognisable in under a second.
✓One message per design — headline, optional subline, one button.
✓Contrast over taste: text at least 4.5:1 against the background.

More Display / Affiliate formats

FORMAT	SIZE	USE
Leaderboard	728×90	IAB
Medium Rectangle	300×250	IAB
Large Rectangle	336×280	IAB
Wide Skyscraper	160×600	IAB
Skyscraper	120×600	IAB
Half Page	300×600	IAB
Mobile Banner	320×50	IAB
Large Mobile Banner	320×100	IAB
Full Banner	468×60	IAB
Super Leaderboard	970×90	IAB
Billboard	970×250	IAB
Small Square	200×200	IAB
Panorama	980×120	DACH
Wallpaper Top	800×250	DACH

Frequently asked questions

When is 250x250 the better choice over 300x250?: When the slot offers less than 300 pixels of width, typical of tight sidebars and multi-column footers. Everywhere else the medium rectangle has more reach and should come first.
Can I reuse a social square here?: The ratio matches, the type size does not. A 1080x1080 post scaled down to 250 pixels is unreadable. Keep the image, but set the headline and button again at display scale.
Which file format and file size?: myfeedr delivers 250×250 as PNG (lossless) and JPG. For trafficking, the JPG is what counts: around 45 KB is a realistic target for this size – small enough for any network without visible quality loss.
What does the format cost?: Formats are not sold individually — :size is part of the "Display" package from 199 €. Analysing your website is free.

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250×250 Square